So now we can make map where ladder will work since map will got "blizzard" or "ladder" icon

Nice, I was trying to do this like 20 years ago. Not sure if this will pass blizzards check sum tho.... try it on battle.net to confirm.. also if you are doing this on a pvpgn server it's not really needed because pvpgn can make any map count as a ladder. Keep working with this tho find the PGL icon My bot can get it.